Downloadfile 7

Geolical time

By Ainara Fdez.
  • Period: 541 BCE to 250 BCE

    Paleozoic ERA

    Age of invertebrates
  • Period: 541 BCE to 485 BCE

    Cambrian

  • 510 BCE

    Many marine invertebrates with external skeletons (arthropods)

    Many marine invertebrates with external skeletons (arthropods)
  • Period: 485 BCE to 444 BCE

    Ordovician

  • 460 BCE

    Fish without jaws

    Fish without jaws
  • Period: 444 BCE to 419 BCE

    Silurian

  • 430 BCE

    First land plants

    First land plants
  • Period: 419 BCE to 359 BCE

    Devorian

  • 405 BCE

    First amphibians

    First amphibians
  • Period: 359 BCE to 299 BCE

    Carboniferous

  • 320 BCE

    First reptiles

    First reptiles
  • Period: 299 BCE to 252 BCE

    Permian

  • 270 BCE

    Reptiles diversify

    Reptiles diversify
  • Period: 252 BCE to 201 BCE

    Triassic

  • Period: 252 BCE to 66 BCE

    Mesozoic ERA

    the Earth's greatest extinction occurs Pangaea forms
  • 225 BCE

    First dinosaurus

    First dinosaurus
  • Period: 201 BCE to 145 BCE

    Jurassic

  • 170 BCE

    Dinosaurs diversify

    Dinosaurs diversify
  • Period: 145 BCE to 66 BCE

    Cretaceous

  • 100 BCE

    Extinction of dinosaurs and ammonites

    Extinction of dinosaurs and ammonites
  • Period: 66 BCE to 1 BCE

    Cenozoic ERA

    Massive extintion from a meteorite impact
  • Period: 66 BCE to 2 BCE

    Tertiary

  • 20 BCE

    Development and diversification of mammals

    Development and diversification of mammals
  • Period: 2 BCE to 50

    Quaternary